Overview
Mark Jr is a primary care provider, practicing in Internal Medicine in Dallas, Texas. Dr. Jr has been practicing medicine for over 22 years and is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Bleeding. His top areas of expertise are Sepsis, Sickle Cell Disease, Peptic Ulcer, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- OTHER COMMERCIAL
- EPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
- EPO
- HMO
- POS
- PPO
- MEDICARE MAPD
- OTHER MEDICARE
Accepted plan types not found. Please verify directly with the provider.
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- OTHER MANAGED MEDICAID
- OTHER MEDICAID
- STATE MEDICAID
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- OTHER MEDICARE PART D
- EPO
- HMO
- PPO
- INSURANCE PLAN
- MEDICARE MAPD
- OTHER COMMERCIAL
- PPO
- HMO
- POS
- MANAGED MEDICAID PLAN
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER COMMERCIAL
- EPO
- HMO
- POS
- PPO
- MEDICARE DISCOUNT CARD
- MEDICARE PDP
- OTHER MEDICARE
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
1441 N Beckley Ave, Ave, Dallas, TX 75203
Texas Health Digestive Specialists
Dr. Sheikh A Saleem has worked in the field of gastroenterology since 2017. He is a fellowship-trained gastroenterologist with clinical focus in the areas of colon cancer screening and the management of gastroesophageal reflux disease, Barrett’s esophagus, Inflammatory bowel disease, various liver diseases, and acute and emergent GI conditions. He uses minimally invasive endoscopic procedures including esophagogastroduodenoscopy (EGD), colonoscopy, and other techniques for management of various GI conditions.Dr. Saleem earned his medical degree at Lahore Medical and Dental College in Pakistan. He completed his internal medicine residency at Bassett Medical Center in Cooperstown, N.Y. He remained in the northeast to complete his fellowship training in gastroenterology at SUNY Upstate Medical University in Syracuse, N.Y. Dr. Saleem previously spent five years with Gastroenterology & Hepatology of Central New York before relocating to North Texas in 2025. He is fluent in the Punjabi and Urdu languages. Dr. Saleem is rated as a Distinguished provider by MediFind in the treatment of Gastrointestinal Bleeding. His top areas of expertise are Gastrointestinal Bleeding, Gastroesophageal Reflux Disease (GERD), Proctitis, Endoscopy, and Colonoscopy.
Texas Digestive Disease Consultants
Alexander Mantas is an Internal Medicine specialist and a Gastroenterologist in Dallas, Texas. Dr. Mantas has been practicing medicine for over 19 years and is rated as a Distinguished provider by MediFind in the treatment of Gastrointestinal Bleeding. His top areas of expertise are Gastrointestinal Bleeding, Heartburn, Proctitis, Gas Bloat Syndrome, and Gastrectomy.
Digestive Health Associates Of Texas - Allen
Sanjay Nayyar is an Internal Medicine specialist and a Gastroenterologist in Allen, Texas. Dr. Nayyar is rated as a Distinguished provider by MediFind in the treatment of Gastrointestinal Bleeding. His top areas of expertise are Acute Pancreatitis, Hereditary Pancreatitis, Morning Sickness, Gastrectomy, and Endoscopy.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Experienced
- AchalasiaDr. Jr isExperienced. Learn about Achalasia.
- Acute Kidney FailureDr. Jr isExperienced. Learn about Acute Kidney Failure.
- Acute PancreatitisDr. Jr isExperienced. Learn about Acute Pancreatitis.
- Alcoholic CirrhosisDr. Jr isExperienced. Learn about Alcoholic Cirrhosis.
- Aortic Valve ReplacementDr. Jr isExperienced. Learn about Aortic Valve Replacement.
- ApoplexyDr. Jr isExperienced. Learn about Apoplexy.

